Aero Base Builder 5-Pack

Maximize your aerobic base with the Aero Base Builder 5-Pack!

This special package contains all five of the 'Aero Base Builder' workouts in the Spinervals competition series including:

• Spinervals 16.0 - Aero Base Builder I (80 Minutes)
• Spinervals 17.0 - Aero Base Builder II (75 Minutes)
• Spinervals 18.0 - Aero Base Builder III (70 Minutes)
• Spinervals 21.0 - Aero Base Builder IV (70 Minutes)
• Spinervals 25.0 - Aero Base Builder V The Compilation (120 Minutes)